DTC Code | DTC Name |
---|---|
P0715 | Input/Turbine Speed Sensor "A" Circuit |
P0717 | Input/Turbine Speed Sensor "A" Circuit No Signal |
DESCRIPTION
The ECM receives a signal from the turbine speed sensor (transmission revolution sensor (NT)) installed in the continuously variable transaxle to control the lock-up engagement pressure and forward and reverse clutch pressure.
The transmission revolution sensor (NT) detects the continuously variable transaxle input shaft speed and sends a signal to the ECM.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
---|---|---|---|---|---|
P0715 | Input/Turbine Speed Sensor "A" Circuit |
|
|
Comes on | DTC stored |
P0717 | Input/Turbine Speed Sensor "A" Circuit No Signal |
|
|
Comes on | DTC stored |
MONITOR DESCRIPTION
The turbine speed sensor (transmission revolution sensor (NT)) detects the transaxle input shaft speed. The ECM determines the necessary gear ratio based on a comparison of the turbine speed sensor (input shaft speed) with the output speed sensor (output shaft speed).
When the output shaft speed is higher than the expected value and the input shaft speed is less than 300 rpm while driving with the shift lever in D, the ECM will determine that there is a malfunction in the transmission revolution sensor (NT). The ECM will illuminate the MIL and store this DTC.
WIRING DIAGRAM
*a | Transmission Revolution Sensor (NT) |
PROCEDURE
READ VALUE USING GTS (SPD (NT) AND NT SENSOR VOLTAGE)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / Primary.
In accordance with the display on the GTS, read the Data List.
Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
SPD (NT) | Input turbine speed | min.: 0 rpm max.: 12750 rpm |
|
Data is displayed in increments of 50 rpm. |
NT Sensor Voltage | Input turbine speed (NT) sensor output voltage | min.: 0.000 V max.: 4.999 V |
0.6 to 1.5 V: Engine idling (Vehicle stopped with shift lever in P or N) | - |
Result | ||||||
---|---|---|---|---|---|---|
|
B |
REPLACE ECM Click here |
A |
INSPECT TRANSMISSION REVOLUTION SENSOR (NT)
Remove the transmission revolution sensor (NT).
Connect the battery to the sensor as shown in the illustration.
*1 | Battery | *2 | Ammeter |
*a | Component without harness connected (Transmission Revolution Sensor (NT)) |
*b | Magnet |
*c | 5 mm or less | - | - |
Wave a magnetic object left and right in front of the transmission revolution sensor (NT) tip (5 mm (0.197 in.) or less) to change the high/low signals while measuring the current.
Note
Make sure to wave the magnetic object during the inspection. The current will not change without waving the magnetic object as indicated by the arrow in the illustration.
Measure the current according to the value(s) in the table below.
Standard Current | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPLACE TRANSMISSION REVOLUTION SENSOR (NT) Click here |
OK |
CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NT) - ECM)
Disconnect the B33 transmission revolution sensor (NT) connector.
Disconnect the B31 ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Connect the B31 ECM connector.
Connect the B33 transmission revolution sensor (NT) connector.
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NT) - ECM) |
OK |
REPLACE ECM
Replace the ECM.
Result | ||
---|---|---|
|
NEXT |
PERFORM INITIALIZATION
Note
Performing Reset Memory will clear the learned value of the yaw rate and acceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform Reset Memory, yaw rate and acceleration sensor zero point calibration, and CVT oil pressure calibration when replacing any of the parts shown in the following table:
Replaced Part |
---|
|
After performing Reset Memory, always perform yaw rate and acceleration sensor (deceleration sensor zero point) calibration first, and then CVT oil pressure calibration.
Always perform calibration with the vehicle on level ground.
Do not shake or vibrate the vehicle during calibration.
Using the GTS, perform Reset Memory, deceleration sensor zero point calibration and CVT oil pressure calibration.
Check for DTCs again.
Result | ||
---|---|---|
|
NEXT |
END |
REPLACE ECM
Replace the ECM.
Result | ||
---|---|---|
|
NEXT |
PERFORM INITIALIZATION
Note
Performing Reset Memory will clear the learned value of the yaw rate and acceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform Reset Memory, yaw rate and acceleration sensor zero point calibration, and CVT oil pressure calibration when replacing any of the parts shown in the following table:
Replaced Part |
---|
|
After performing Reset Memory, always perform yaw rate and acceleration sensor (deceleration sensor zero point) calibration first, and then CVT oil pressure calibration.
Always perform calibration with the vehicle on level ground.
Do not shake or vibrate the vehicle during calibration.
Using the GTS, perform Reset Memory, deceleration sensor zero point calibration and CVT oil pressure calibration.
Check for DTCs again.
Result | ||
---|---|---|
|
NEXT |
END |